Unrecognised device, MAC address all zeros

WiFi Gaurd keeps finding an unrecognized device with Mac address 00-00-00-00-00-00, Vendor Xerox Corporation. My Modem which also handles my WiFi shows no such device connected or ever having been connected. Should I be concerned?

My net connection was getting disconnected frequently and so today I disconnected the router and used my modem to connect directly to find WiFi Guard warning me of this unrecognized device. I was surprised because WiFi Guard did not find any such device before when I was connecting through my router. Would it be possible for WiFi Guard to BLOCK such unknown devices? Do let us know ...

I just sent an email to SoftPerfect about this exact thing on OUR system. It didn't show up at first. I installed the WiFi guard about two weeks ago and all of a sudden TODAY the XEROX thing shows up. No MAC address. And I've got NO idea where this is showing up from. Apparently many of us are finding this 'announcement'. Sure would be nice to lay this to rest - somehow.

I bet you have a printer in your house or somewhere nearby that someone tried to WPS to your network. That printer then went into AP mode and is essentially acting like your main AP, hence having the same SSID. This seems to be what happened to me recently although I am still investigating.

I have the problem X4 addresses. All show 0 for Mac and xerox Corp for provider. Don't use Wifi guard and don't have a WPS printer connection.
Can not get them to go away even across restart. Shows wifi signal in wifi analyzer but no content on scope.

I have this same thing with an unknown mac address with all 0 s. You said your network was down. You have a computer hacker shutting your network down by using probably aircrack which deauthenticates your device then he takes your mac address for that device so he can connect to your wifi. If you are using a router with WPS make sure it is disabled. I suggest getting a router without WPS. I still have hackers across from my street .

I am experiencing the same problem, although I have a Dell Sonicwall and on the traffic monitor it gives me the MAC for the Video Conferencing device, namely a Huawei TE20, but also it has an entry on the same IP address with the MAC address 00:00:00:00:00:00 and the Src Vendor is Xerox Corporation.

I have changed the IP address on the VC as we have no Xerox printer in the building. Sure as bob the Xerox corporation IP on the traffic monitor also changed to the same IP address, but suddenly has a lot more entries using different ports. I'm thinking either it is hacked or there sits a controller inside the Huawei which is the xerox, although the former seems more likely. Any ideas on what it could be?

The issue is that every conference call, to the second, it cuts out on 15 minutes and 7 seconds. Everytime.